I observed a similar behavior,
but it was the result of my cutting and pasting
the identity header from sngrep, which looks to
have dropped a few bytes on the line break. Any
chance that’s what you’re doing, too?
Here is an example, payload
taken from Identity header.
Identity was added with
secsipid_add_identity
Payload test:
$var(test) =
"eyJhdHRlc3QiOiJBIiwiZGVzdCI6eyJ0biI6I5ODkyODkyMjgwIl19LCJpYXQiOjE2MjUxMDk2MzQsIm9yaWciOnsidG4iOiI5ODk0MDA0MjMwIn0sIm9yaWdpZCI6IjNmYmE4NTg0LTRkNzMtNGU2NC04NDc5LTQ5MjU2ZGIyMWFhYSJ9";
xlogl("L_WARN",
"$(var(test){s.decode.base64t})\n");
Result is:
{"attest":"A","dest":{"tn":#���#��##�#002%���&�#027B#�#023c#S#023#003�#023sB�&�&�r#��'F�#�#���C#003#003C#3#002'��&�&�v�B#�Vc�s#006f"�&6#026#022�CVCB�#023c3#022�3#0066#�#026#6#026S�r'
That’s the same way I am doing
it, I was just trying to do a verification that
the identity header/payload was correct before
activating new changes.
I will do further testing and
share results. Just found it odd that the header
would decode but payload wouldn’t.
Daniel W. Graham, CTO
CMSInter.net LLC
DIRECT (989) 400-4230
INTERNET | TELEPHONE |
MANAGED IT
I DO IT WITH:
# Break JWT
$var(jwt1) =
$(hdr(Identity){s.select,0,.}{s.decode.base64t});
$var(jwt2) =
$(hdr(Identity){s.select,1,.}{s.decode.base64t});
Hello,
not familiar with python functions, have
you tried with Kamailio transformation?
https://www.kamailio.org/wiki/cookbooks/5.5.x/transformations#sdecodebase64url
Maybe you have to specify in Python that it
is ASCII, I remember I had to do decoding
when porting kamcli to work with Python3 --
had to change from using directly the
variables received as parameter to a decoded
value, something like:
prefix = tprefix.encode("ascii",
"ignore").decode()
Also, if you can, share the identity header
here to test with and see if can be
reproduced.
Cheers,
Daniel
On 30.06.21 21:14,
Daniel W. Graham wrote:
I
am unable to base64url decode the json
payload in identity header generated by
secsipid.
(Using
python for test)
decoded_payload
= url64.decode(‘payload’)
UnicodeDecodeError:
'utf-8' codec can't decode byte 0xc2 in
position 27: invalid continuation byte
Header
decodes fine this way but not payload.
Is
this an issue with the payload encoding?
Kamailio
5.5
Daniel
W. Graham, CTO
CMSInter.net
LLC
DIRECT
(989) 400-4230
INTERNET
| TELEPHONE | MANAGED IT
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